Lochinvar COPPER-FIN 497 - 2067 - Manual (Page 9)

9
Ratings
(continued)
Notes:
1. Copper-fins require special gas venting. Use only the vent
materials and methods specified in the Installation and
Service Manual.
2. The Copper-fin is orificed for operation up to 2000
feet altitude. The ap pli ance will be derated 4% per 1000
feet above 2000 feet el e va tion. Consult the factory for
installations above 2000 feet elevation.
Figure B High altitude label location_water heater
HIGH ALTITUDE
LABEL
Copper-fin Specifications
Model Number
Note: Change “N” to
“L” for L.P. gas models
Input
MBH Water
Content Gallons
Water Connections Gas Connections Vent Size
(Note 1)
CWN497 495 1.7 2" 1 1/4" 6"
CWN647 645 2.0 2" 1 1/4" 8"
CWN747 745 2.1 2" 1 1/4" 8"
CWN987 985 2.2 2 1/2" 2" 10"
CWN1257 1255 2.6 2 1/2" 2" 12"
CWN1437 1435 2.9 2 1/2" 2" 12"
CWN1797 1797 3.3 2 1/2" 2" 14"
CWN2067 2065 3.6 2 1/2" 2" 14"
Maximum allowed working pressure is located on the rating plate.
NOTICE
Installation & Service Manual